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Angela's parents think she's on the road to ruin because she's dating a "bad boy." After her behavior gets too much for them, they ship her off to Hidden Oak. Isolated and isolating, Hidden Oak promises to rehabilitate "dangerous girls." But as Angela gets drawn in further and further, she discovers that recovery is only on the agenda for the "better" girls. The other girls -- designated as "the purple thread" -- will instead be manipulated to become more and more dangerous . . . and more and more reliant on Hidden Oak's care.

"Gripping, violent, and terrifying."

--Kirkus Reviews


"Teens might behave dangerously themselves to get their hands on this page-turner with its commentary on education."



"The struggle and eventual triumph of the bad girls over the evil teachers makes for an intriguing conflict that many teens will appreciate."

--School Library Journal


A New York Public Library "Best of the Teen Age."

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